69090904086209 has 2 divisors, whose sum is σ = 69090904086210. Its totient is φ = 69090904086208.

The previous prime is 69090904086137. The next prime is 69090904086233. The reversal of 69090904086209 is 90268040909096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62520253650625 + 6570650435584 = 7906975^2 + 2563328^2 .

It is a cyclic number.

It is not a de Polignac number, because 69090904086209 - 2²⁰ = 69090903037633 is a prime.

It is not a weakly prime, because it can be changed into another prime (69090904086709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34545452043104 + 34545452043105.

It is an arithmetic number, because the mean of its divisors is an integer number (34545452043105).

Almost surely, 2^{69090904086209} is an apocalyptic number.

It is an amenable number.

69090904086209 is a deficient number, since it is larger than the sum of its proper divisors (1).

69090904086209 is an equidigital number, since it uses as much as digits as its factorization.

69090904086209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 69090904086209 in words is "sixty-nine trillion, ninety billion, nine hundred four million, eighty-six thousand, two hundred nine".